Mate, just checked in for the first time for a few months, look at Sumner and Taylor's, off shore winds blow from the S/W for Sumner and west for Taylor's. If it's small look at Brighton or further north along Waimarie beaches. Most of the swell comes from the south, South East direction, further north you go along the East Coast the bigger the swell if from the south direction. Look all along the east Coast heading towards Kaikoura you are bound to find a secluded spot all perfect for SUP. Maungamanu point or just north of Kaikoura township is well worth a look, it's a long wally rocky, pebbly point break that breaks close to shore, if you get this place when it's on...well, you'll see, oh yea crowds haven't been invented yet in that part of Aotearoa, happy holiday dude.